Hemorrhoids are a common disease located in the anal area and can develop at any age, but the incidence increases as we age. For patients, suffering from hemorrhoids is a very painful thing, early detection and early treatment is the key, so how exactly to check and diagnose hemorrhoids? Self-examination methods: (1) observe whether there is painless fresh bleeding after defecation clinging to the surface of the stool or wipe the buttocks with blood on the paper, serious as drops of water or even as arrow spray (2) pay attention to whether there is a prolapse from the anus during defecation, generally after the stool can recover on its own or with the hand into the anus to recover. (3) Third, touch the anal area with your hand to see if there are protrusions, and wipe your buttocks with unclean feeling and foreign body feeling after defecation. Medical diagnosis: First of all, do anal visual examination: use both hands to hold the anus open to both sides, except for stage 1 internal hemorrhoids, other 3 stages of internal hemorrhoids can mostly be seen under anal visual examination. For those who have prolapse, it is best to observe immediately after squatting and defecating, which can clearly see the real situation of the size, number and location of hemorrhoids, especially for the diagnosis of circumferential hemorrhoids is more meaningful. Secondly, do rectal palpation: when there is no thrombosis or fibrosis in internal hemorrhoids, it is not easy to find out, but the main purpose of finger palpation is to understand whether there are other lesions in the rectum, especially external rectal cancer and polyps. Finally, anoscopy should be done: first observe whether there is congestion, edema, ulcers and lumps in the rectal mucosa, and then observe whether there are hemorrhoids in the upper part of the dentate line after excluding other rectal disorders; if so, internal hemorrhoids can be seen to protrude into the anoscope as dark red nodules, and their number, size and location should be noted at this time. According to the typical symptoms and examination of internal hemorrhoids, the diagnosis is generally not difficult, but it needs to be differentiated from the following diseases: 1. Rectal cancer: clinically, lower rectal cancer is often misdiagnosed as hemorrhoids, which delays the treatment. The main reason for misdiagnosis is that the diagnosis is based on symptoms only, without rectal finger diagnosis and anoscopy, so the above two kinds of examinations must be done in the diagnosis of hemorrhoids. Rectal cancer can be found under the rectal finger diagnosis with high and low hard fast, ulcers on the surface, the intestinal lumen is often narrow, and the finger sleeve is often stained with blood. The particular point to note is that internal hemorrhoids and circular hemorrhoids can coexist with rectal cancer, must not see internal hemorrhoids or circular hemorrhoids, satisfied with the diagnosis of hemorrhoids and hemorrhoid treatment, until the patient’s symptoms worsen to rectal diagnosis or other tests to clarify the diagnosis, this misdiagnosis, misdiagnosis of painful lessons, not rare in clinical practice, worth paying attention to. 2, rectal polyps: low rectal polyps with tips, if prolapsed outside the anus sometimes misdiagnosed as prolapsed hemorrhoids, but polyps are mostly seen in children, round, substantial, tipped and movable. 3, anal canal rectal prolapse: sometimes misdiagnosed as ring hemorrhoids, but rectal prolapse mucosa is ring-shaped, smooth surface, sphincter relaxed during rectal finger diagnosis; ring hemorrhoids mucosa is plum petal-shaped, sphincter is not relaxed.